A pixelated wavelength conversion device, a pixelated wavelength conversion element, and a fabrication method therefor, the fabrication method comprising: coating a first slurry formed by evenly mixing a luminescent material and a first curing glue onto a substrate (210) to form a wavelength conversion layer; directing curing light by means of a light guiding assembly (100) to a portion of a surface of the wavelength conversion layer so as to cure a portion of the wavelength conversion layer; cleaning the uncured wavelength conversion layer, and forming on the substrate (210) a plurality of wavelength conversion portions (220) that are arranged at intervals; coating, at one side of the substrate (210) at which the wavelength conversion portions (220) are arranged, a second slurry formed by evenly mixing scattering particles and a second curing glue; and curing the second slurry to form a barrier portion (230), wherein the light guiding assembly (100) is a microlens array, a galvanometer or an optical fiber. The light guiding assembly (100) is used to form the patterned wavelength conversion portions (220), and the light guiding assembly (100) is disposed in the pixelated wavelength conversion device that comprises the wavelength conversion portions (220). The fabrication method therefor is simple and fast, which is beneficial to the industrialization of pixelated wavelength conversion elements.
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